I hope everyone is doing well and staying safe. I have more than one SPF records in my DNS. I don’t know the first thing about how to merge them correctly. Could anyone who knows how to merge SPF records show me how you merge the following into one:
Otherwise, if you want to include SPF from 2nd or 3rd domain, you could create a CNAME record and use it like that - in case the value changes (not by you) at their end/service.